<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>分类参数</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区域-->
    <el-card>
      <!--头部警告区域-->
      <el-alert
        title="注意：只允许为第三级分类的设置相关参数"
        type="warning"
        show-icon
        :closable="false"
      >
      </el-alert>
      <!--选择商品分类区域-->
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类:</span>
          <!--选择商品分类的级联选择框-->
          <el-cascader
            v-model="selectedCateKeys"
            :options="CataList"
            :props="{ expandTrigger: 'hover', ...cateProps }"
            @change="handleChange"
          ></el-cascader>
        </el-col>
      </el-row>
      <!--tab页签区域-->
      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <!--添加动态参数的控制面板-->
        <el-tab-pane label="动态参数" name="many">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addDialogVisible = true"
            >添加参数</el-button
          >
          <!--动态参数表格-->
          <el-table :data="manyTableData" border stripe>
            <!--展开行-->
            <el-table-column type="expand"></el-table-column>
            <!--索引列-->
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column
              label="参数名称"
              prop="attr_name"
            ></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  size="mini"
                  type="primary"
                  icon="el-icon-edit"
                  @click="showEditDialog"
                  >编辑</el-button
                >
                <el-button
                  size="mini"
                  type="danger"
                  icon="el-icon-delete"
                  @click="removeParams(scope.row.attr_id)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <!--添加静态属性的控制面板-->
        <el-tab-pane label="静态属性" name="only">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDisabled"
            @click="addDialogVisible = true"
            >添加属性</el-button
          >
          <!--静态参数表格-->
          <el-table :data="onlyTableData" border stripe>
            <!--展开行-->
            <el-table-column type="expand"></el-table-column>
            <!--索引列-->
            <el-table-column type="index" label="#"></el-table-column>
            <el-table-column
              label="属性名称"
              prop="attr_name"
            ></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  size="mini"
                  type="primary"
                  icon="el-icon-edit"
                  @click="showEditDialog"
                  >编辑</el-button
                >
                <el-button size="mini" type="danger" icon="el-icon-delete"
                   @click="removeParams(scope.row.attr_id)">删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <!--添加参数的对话框-->
    <el-dialog
      :title="'添加' + titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!--添加参数的表单-->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
      >
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input> </el-form-item
      ></el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>

    <!--修改参数的对话框-->
    <el-dialog
      :title="'修改' + titleText"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!--添加参数的表单-->
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="100px"
      >
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input> </el-form-item
      ></el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      // 所有数据列表
      CataList: [],
      // 级联选择框的配置对象性
      cateProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
      },
      // 级联选择框双向绑定的数据
      selectedCateKeys: [],
      // 被激活的页签名称
      activeName: 'many',
      // 动态参数的数据
      manyTableData: [],
      // 静态参数的数据
      onlyTableData: [],
      // 控制添加对话框的显示与隐藏
      addDialogVisible: false,
      // 添加参数的表单参数对象
      addForm: {},
      // 添加表单验证的规则对象
      addFormRules: {
        attr_name: [
          { required: true, message: '请输入参数名称', trigger: 'blur' },
        ],
      },
      // 添加修改参数的对话框的显示与隐藏
      editDialogVisible: false,
      // 修改的表单数据
      editForm: {},
      //修改表单验证的对象
      editFormRules: {
        attr_name: [
          { required: true, message: '请输入参数名称', trigger: 'blur' },
        ],
      },
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    // 获取所有的分类商品的数据
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取数据失败!')
      }
      this.CataList = res.data
      // console.log(this.CataList)
    },
    // 选择项发生变化触发这个函数
    handleChange() {
      this.getParmasData()
    },
    // tab页签点击处理的函数
    handleTabClick() {
      this.getParmasData()
      // console.log(this.activeName)
    },
    // 获取参数的列表数方法
    async getParmasData() {
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = []
        return
      }
      //  证明选中的是三级分类
      // 根据所选的id和当前所处的面板，获取对应的参数
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        {
          params: { sel: this.activeName },
        }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('获取数据失败!')
      }
      // console.log(res)
      if (this.activeName === 'many') {
        this.manyTableData = res.data
      } else {
        this.onlyTableData = res.data
      }
    },
    // 监听添加对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加参数
    addParams() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName,
          }
        )
        console.log(res)
        if (res.meta.status !== 201) {
          return this.$message.error('添加参数失败!')
        }
        this.$message.success('添加参数成功!')
        this.addDialogVisible = false
        this.getParmasData()
      })
    },
    // 点击按钮，编辑对话框
    showEditDialog() {},
    // 重置表单的操作
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 编辑对话框的方法
    editParams() {},
    // 根据id删除功能的方法
   async removeParams() {
    const confirmResult = await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      }).catch(err => err)
      //用户取消了操作
      if(confirmResult !== 'confirm'){
        return this.$message.info('已取消了操作')
      }

      // 删除的业务逻辑

      const {data:res} = await this.$http.delete(
         `categories/${this.cateId}/attributes/${attr_id}`)
      if(res.meta.status !==200){
        return this.$meaasge.error('删除参数失败!')
      }
      console.log(res )
      this.$message.success('删除参数成功!')

      this.getParmasData()
    },
  },
  computed: {
    // 如果按钮需要被禁用，则返回true ,否则返回false
    isBtnDisabled() {
      if (this.selectedCateKeys.length !== 3) {
        return true
      }
      return false
    },
    // 当前选中的三级分类的ID
    cateId() {
      if (this.selectedCateKeys.length === 3) {
        return this.selectedCateKeys[2]
      }
      return null
    },
    // 动态计算标题的文本
    titleText() {
      if (this.activeName === 'many') {
        return '动态参数'
      }
      return '静态参数'
    },
  },
}
</script>
<style lang="less" scoped>
.cat_opt {
  margin: 15px 0;
}
</style>
